Novak Djokovic of Serbia looks at the ball after slipping as he plays Andy Murray of Britain during the Men's singles final match at the All England Lawn Tennis Championships in Wimbledon, London, Sunday, July 7, 2013. less

Novak Djokovic of Serbia looks at the ball after slipping as he plays Andy Murray of Britain during the Men's singles final match at the All England Lawn Tennis Championships in Wimbledon, London, Sunday, July ... more

Photo: AP

Novak Djokovic of Serbia looks at the ball after slipping as he... Photo-4887631.65109 - GreenwichTime

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Andy Murray of Britain stretches for a return by Novak Djokovic of Serbia during the Men's singles final match at the All England Lawn Tennis Championships in Wimbledon, London, Sunday, July 7, 2013.

Andy Murray of Britain stretches for a return by Novak Djokovic of Serbia during the Men's singles final match at the All England Lawn Tennis Championships in Wimbledon, London, Sunday, July 7, 2013.

TOPSHOTS France's Marion Bartoli celebrates beating Belgium's Kirsten Flipkens during their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England ... more

Germany's Sabine Lisicki (Foreground) returns against Poland's Agnieszka Radwanska during their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 4, 2013. AFP PHOTO / CARL COUR - RESTRICTED TO EDITORIAL USECARL COURT/AFP/Getty Images less

Germany's Sabine Lisicki (Foreground) returns against Poland's Agnieszka Radwanska during their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All ... more

France's Marion Bartoli returns against Belgium's Kirsten Flipkens during their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 4, 2013. AFP PHOTO / GLYN KIRK - RESTRICTED TO EDITORIAL USEGLYN KIRK/AFP/Getty Images ORG XMIT: 3275 less

France's Marion Bartoli returns against Belgium's Kirsten Flipkens during their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England Club in ... more

Britain's Andy Murray attends a training session at the practice courts on day ten of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 4, 2013. AFP PHOTO / ADRIAN DENNIS - RESTRICTED TO EDITORIAL USEADRIAN DENNIS/AFP/Getty Images ORG XMIT: 3369 less

Britain's Andy Murray attends a training session at the practice courts on day ten of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 4, 2013. ... more

TOPSHOTS Argentina's Juan Martin Del Potro serves against Serbia's Novak Djokovic during their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. AFP PHOTO / CARL COURT - RESTRICTED TO EDITORIAL USECARL COURT/AFP/Getty Images less

TOPSHOTS Argentina's Juan Martin Del Potro serves against Serbia's Novak Djokovic during their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All ... more

LONDON, ENGLAND - JULY 03: Andy Murray of Great Britain celebrates victory during the Gentlemen's Singles quarter-final match against Fernando Verdasco of Spain on day nine of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club at Wimbledon on July 3, 2013 in London, England. (Photo by Dennis Grombkowski/Getty Images) ORG XMIT: 168810689 less

LONDON, ENGLAND - JULY 03: Andy Murray of Great Britain celebrates victory during the Gentlemen's Singles quarter-final match against Fernando Verdasco of Spain on day nine of the Wimbledon Lawn Tennis ... more

Juan Martin Del Potro of Argentina serves to David Ferrer of Spain in their Men's singles quarterfinal match at the All England Lawn Tennis Championships in Wimbledon, London, Wednesday, July 3, 2013. (AP Photo/Alastair Grant) ORG XMIT: WIM183 less

Juan Martin Del Potro of Argentina serves to David Ferrer of Spain in their Men's singles quarterfinal match at the All England Lawn Tennis Championships in Wimbledon, London, Wednesday, July 3, 2013. (AP ... more

Sabine Lisicki of Germany reacts after defeating Agnieszka Radwanska of Poland in their Women's singles semifinal match at the All England Lawn Tennis Championships in Wimbledon, London, Thursday, July 4, 2013. ... more

TOPSHOTS US players Bob Bryan (R) and Mike Bryan (L) sit between games against India's Rohan Bopanna and France's Edouard Roger-Vasselin in their men's doubles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 4, 2013. AFP PHOTO / ADRIAN DENNIS - RESTRICTED TO EDITORIAL USEADRIAN DENNIS/AFP/Getty Images ORG XMIT: 3441 less

TOPSHOTS US players Bob Bryan (R) and Mike Bryan (L) sit between games against India's Rohan Bopanna and France's Edouard Roger-Vasselin in their men's doubles semi-final match on day ten of the 2013 Wimbledon ... more

TOPSHOTS Germany's Sabine Lisicki reacts to winning a game in the third set during her women's singles semi-final match against Poland's Agnieszka Radwanska on day ten of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 4, 2013. AFP PHOTO / GLYN KIRK - RESTRICTED TO EDITORIAL USEGLYN KIRK/AFP/Getty Images ORG XMIT: 3450 less

TOPSHOTS Germany's Sabine Lisicki reacts to winning a game in the third set during her women's singles semi-final match against Poland's Agnieszka Radwanska on day ten of the 2013 Wimbledon Championships tennis ... more

TOPSHOTS France's Marion Bartoli returns against Belgium's Kirsten Flipkens during their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England Club ... more

TOPSHOTS France's Marion Bartoli celebrates beating Belgium's Kirsten Flipkens during their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England ... more

TOPSHOTS France's Marion Bartoli celebrates beating Belgium's Kirsten Flipkens during their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England ... more

TOPSHOTS France's Marion Bartoli returns on her way to beating Belgium's Kirsten Flipkens in their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 4, 2013. Bartoli won 6-1, 6-2. AFP PHOTO / GLYN KIRK - RESTRICTED TO EDITORIAL USEGLYN KIRK/AFP/Getty Images ORG XMIT: 3342 less

TOPSHOTS France's Marion Bartoli returns on her way to beating Belgium's Kirsten Flipkens in their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All ... more

Photo: GLYN KIRK, Getty

TOPSHOTS France's Marion Bartoli returns on her way to beating... Photo-4880871.65109 - GreenwichTime

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Sabine Lisicki of Germany plays a return to Agnieszka Radwanska of Poland during their Women's singles semifinal match at the All England Lawn Tennis Championships in Wimbledon, London, Thursday, July 4, 2013. (AP Photo/Anja Niedringhaus) ORG XMIT: WIM321 less

Sabine Lisicki of Germany plays a return to Agnieszka Radwanska of Poland during their Women's singles semifinal match at the All England Lawn Tennis Championships in Wimbledon, London, Thursday, July 4, 2013. ... more

TOPSHOTS France's Marion Bartoli returns against Belgium's Kirsten Flipkens during their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England Club ... more

TOPSHOTS France's Marion Bartoli celebrates beating Belgium's Kirsten Flipkens during their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England ... more

TOPSHOTS France's Marion Bartoli returns on her way to beating Belgium's Kirsten Flipkens in their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 4, 2013. Bartoli won 6-1, 6-2. AFP PHOTO / GLYN KIRK - RESTRICTED TO EDITORIAL USEGLYN KIRK/AFP/Getty Images ORG XMIT: 3342 less

TOPSHOTS France's Marion Bartoli returns on her way to beating Belgium's Kirsten Flipkens in their women's singles semi-final match on day ten of the 2013 Wimbledon Championships tennis tournament at the All ... more

Photo: GLYN KIRK, Getty

TOPSHOTS France's Marion Bartoli returns on her way to beating... Photo-4880883.65109 - GreenwichTime

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TOPSHOTS Serbia's Novak Djokovic does the slips after reaching for a return against Czech Republic's Tomas Berdych during their men's singles quarter-final match on day nine of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 3, 2013. AFP PHOTO / BEN STANSALL - RESTRICTED TO EDITORIAL USEBEN STANSALL/AFP/Getty Images ORG XMIT: 2993 less

TOPSHOTS Serbia's Novak Djokovic does the slips after reaching for a return against Czech Republic's Tomas Berdych during their men's singles quarter-final match on day nine of the 2013 Wimbledon Championships ... more

Belgium's Kirsten Flipkens returns against Czech Republic's Petra Kvitova during their women's singles quarter-final match on day eight of the 2013 Wimbledon Championships tennis tournament at the All England ... more

Germany's Sabine Lisicki returns against Estonia's Kaia Kanepi during their women's quarter final match on day eight of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 2, 2013. AFP PHOTO / GLYN KIRK - RESTRICTED TO EDITORIAL USEGLYN KIRK/AFP/Getty Images less

Germany's Sabine Lisicki returns against Estonia's Kaia Kanepi during their women's quarter final match on day eight of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, ... more

TOPSHOTS Argentina's Juan Martin Del Potro (bottom) serves against Spain's David Ferrer during their men's singles quarter-final match on day nine of the 2013 Wimbledon Championships tennis tournament at the ... more

TOPSHOTS US player Serena Williams returns against Japan's Kimiko Date-Krumm in their third round women's singles match on day six of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on June 29, 2013. AFP PHOTO / GLYN KIRK - RESTRICTED TO EDITORIAL USEGLYN KIRK/AFP/Getty Images ORG XMIT: 2220 less

TOPSHOTS US player Serena Williams returns against Japan's Kimiko Date-Krumm in their third round women's singles match on day six of the 2013 Wimbledon Championships tennis tournament at the All England Club ... more

LONDON, ENGLAND - JULY 01: Serena Williams of United States of America plays a backhand during her Ladies' Singles fourth round match against Sabine Lisicki of Germany on day seven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 1, 2013 in London, England. (Photo by Mike Hewitt/Getty Images) ORG XMIT: 168810652 less

LONDON, ENGLAND - JULY 01: Serena Williams of United States of America plays a backhand during her Ladies' Singles fourth round match against Sabine Lisicki of Germany on day seven of the Wimbledon Lawn Tennis ... more

Sabine Lisicki of Germany returns to Serena Williams of the United States in a Women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Monday, July 1, 2013. (AP Photo/Alastair Grant) ORG XMIT: WIM189 less

Sabine Lisicki of Germany returns to Serena Williams of the United States in a Women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Monday, July 1, 2013. (AP Photo/Alastair ... more

Sabine Lisicki of Germany celebrates after beating Serena Williams of the United States in a Women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Monday, July 1, 2013. (AP Photo/Alastair Grant) ORG XMIT: WIM197 less

Sabine Lisicki of Germany celebrates after beating Serena Williams of the United States in a Women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Monday, July 1, 2013. (AP ... more

Serena Williams of the United States reacts as she plays Sabine Lisicki of Germany in a Women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Monday, July 1, 2013. (AP Photo/Alastair Grant) ORG XMIT: WIM190 less

Serena Williams of the United States reacts as she plays Sabine Lisicki of Germany in a Women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Monday, July 1, 2013. (AP ... more

Photo: Alastair Grant

Serena Williams of the United States reacts as she plays Sabine... Photo-4865138.65109 - GreenwichTime

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Kirsten Flipkens of Belgium reacts after defeating Petra Kvitova of the Czech Republic in the Women's singles quarterfinal match at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday, July 2, 2013. (AP Photo/Kirsty Wigglesworth) ORG XMIT: WIM368 less

Kirsten Flipkens of Belgium reacts after defeating Petra Kvitova of the Czech Republic in the Women's singles quarterfinal match at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday, July ... more

TOPSHOTS US player Sloane Stephens returns against France's Marion Bartoli during their women's singles quarter-final match on day eight of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 2, 2013. AFP PHOTO / CARL COURT - RESTRICTED TO EDITORIAL USECARL COURT/AFP/Getty Images ORG XMIT: 2831 less

TOPSHOTS US player Sloane Stephens returns against France's Marion Bartoli during their women's singles quarter-final match on day eight of the 2013 Wimbledon Championships tennis tournament at the All England ... more

Sabine Lisicki of Germany reacts as she wins a Women's singles quarterfinal match against Kaia Kanepi of Estonia at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday, July 2, 2013. (AP Photo/Anja Niedringhaus) ORG XMIT: WIM335 less

Sabine Lisicki of Germany reacts as she wins a Women's singles quarterfinal match against Kaia Kanepi of Estonia at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday, July 2, 2013. (AP ... more

Tennis fans hold up a Union Flag in front of the big screen at Murray Mount as Britain's Andy Murray beats Russia's Mikhail Youzhny in their fourth round men's singles match on day seven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 1, 2013. Murray won 6-4, 7-6, 6-1. AFP PHOTO / BEN STANSALL - RESTRICTED TO EDITORIAL USEBEN STANSALL/AFP/Getty Images ORG XMIT: 2574 less

Tennis fans hold up a Union Flag in front of the big screen at Murray Mount as Britain's Andy Murray beats Russia's Mikhail Youzhny in their fourth round men's singles match on day seven of the 2013 Wimbledon ... more

TOPSHOTS Germany's Sabine Lisicki celebrates beating US player Serena Williams during their fourth round women's singles match on day seven of the 2013 Wimbledon Championships tennis tournament at the All ... more

LONDON, ENGLAND - JUNE 30: Laura Robson of Great Britain in action during a training session on Middle Sunday at Wimbledon on June 30, 2013 in London, England. (Photo by Dennis Grombkowski/Getty Images) *** BESTPIX *** ORG XMIT: 159929434 less

LONDON, ENGLAND - JUNE 30: Laura Robson of Great Britain in action during a training session on Middle Sunday at Wimbledon on June 30, 2013 in London, England. (Photo by Dennis Grombkowski/Getty Images) *** ... more

Serena Williams of the United States reacts after winning a point as she plays Kimiko Date-Krumm of Japan during their Women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Saturday, June 29, 2013. (AP Photo/Sang Tan) ORG XMIT: WIM451 less

Serena Williams of the United States reacts after winning a point as she plays Kimiko Date-Krumm of Japan during their Women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, ... more

Photo: Sang Tan, AP

Serena Williams of the United States reacts after winning a point... Photo-4868008.65109 - GreenwichTime

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Petra Kvitova of the Czech Republic celebrates after beating Ekaterina Makarova of Russia in their Women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Saturday, June 29, 2013. (AP Photo/Anja Niedringhaus) ORG XMIT: WIM139 less

Petra Kvitova of the Czech Republic celebrates after beating Ekaterina Makarova of Russia in their Women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Saturday, June 29, ... more

TOPSHOTS Serbia's Viktor Troicki dives for the ball without his racquet after losing grip on his racquet in a previous dive for a return against Russia's Mikhail Youzhny in their third round men's singles match on day six of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on June 29, 2013. AFP PHOTO / ADRIAN DENNIS - RESTRICTED TO EDITORIAL USEADRIAN DENNIS/AFP/Getty Images ORG XMIT: 1878 less

TOPSHOTS Serbia's Viktor Troicki dives for the ball without his racquet after losing grip on his racquet in a previous dive for a return against Russia's Mikhail Youzhny in their third round men's singles match ... more

Jerzy Janowicz of Poland reacts after defeating Nicolas Almagro of Spain in their Men's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Friday, June 28, 2013. (AP Photo/Anja ... more

Serena Williams of the United States of America looks on during her Ladies' Singles first round match against Mandy Minella of Luxembourg on day two of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 25, 2013 in London. less

Serena Williams of the United States of America looks on during her Ladies' Singles first round match against Mandy Minella of Luxembourg on day two of the Wimbledon Lawn Tennis Championships at the All England ... more

Photo: Julian Finney, Getty Images

Serena Williams of the United States of America looks on during her... Photo-4833590.65109 - GreenwichTime

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Dustin Brown of Germany tries to return the ball by throwing his racquet as he faces Lleyton Hewitt of Australia during their Men's second round singles match at the All England Lawn Tennis Championships in Wimbledon, London, Wednesday, June 26, 2013. less

Dustin Brown of Germany tries to return the ball by throwing his racquet as he faces Lleyton Hewitt of Australia during their Men's second round singles match at the All England Lawn Tennis Championships in ... more

Young tennis fans write the names of players next to their autographs on giant tennis balls during day two of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 25, 2013 in London. less

Young tennis fans write the names of players next to their autographs on giant tennis balls during day two of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 25, ... more

Photo: Dan Kitwood, Getty Images

Young tennis fans write the names of players next to their... Photo-4833592.65109 - GreenwichTime

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James Duckworth of Australia plays a backhand during his Gentlemen's Singles first wround match against Denis Kudla of the United States of America on day two of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 25, 2013 in London. less

James Duckworth of Australia plays a backhand during his Gentlemen's Singles first wround match against Denis Kudla of the United States of America on day two of the Wimbledon Lawn Tennis Championships at the ... more

Photo: Clive Brunskill, Getty Images

James Duckworth of Australia plays a backhand during his... Photo-4833593.65109 - GreenwichTime

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J.K. Rowling watches the Ladies' Singles first round match between Serena Williams of the United States of America and Mandy Minella of Luxembourg on day two of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 25, 2013 in London. less

J.K. Rowling watches the Ladies' Singles first round match between Serena Williams of the United States of America and Mandy Minella of Luxembourg on day two of the Wimbledon Lawn Tennis Championships at the ... more

Patrick Mouratoglou (L), coach of Serena Williams of the United States of America watches her Ladies' Singes first round match against Mandy Minella of Luxembourg on day two of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 25, 2013 in London. less

Patrick Mouratoglou (L), coach of Serena Williams of the United States of America watches her Ladies' Singes first round match against Mandy Minella of Luxembourg on day two of the Wimbledon Lawn Tennis ... more

Novak Djokovic of Serbia tosses the ball in the air before serving during his Gentlemen's Singles first round match against Florian Mayer of Germany on day two of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 25, 2013 in London, England. less

Novak Djokovic of Serbia tosses the ball in the air before serving during his Gentlemen's Singles first round match against Florian Mayer of Germany on day two of the Wimbledon Lawn Tennis Championships at the ... more

Photo: Julian Finney, Getty Images

Novak Djokovic of Serbia tosses the ball in the air before serving... Photo-4833599.65109 - GreenwichTime

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Slovakia's Anna Schmiedlova eyes the ball for a return against Australia's Samantha Stosur during their women's first round match on day two of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on June 25, 2013. Stosur won 6-1, 6-3. less

Slovakia's Anna Schmiedlova eyes the ball for a return against Australia's Samantha Stosur during their women's first round match on day two of the 2013 Wimbledon Championships tennis tournament at the All ... more

Germany's Carina Witthoeft reaches for a return against Japan's Kimiko Date-Krumm during their women's first round match on day two of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on June 25, 2013. Date-Krumm won 6-0, 6-2. less

Germany's Carina Witthoeft reaches for a return against Japan's Kimiko Date-Krumm during their women's first round match on day two of the 2013 Wimbledon Championships tennis tournament at the All England Club ... more

Japan's Kimiko Date-Krumm (L) shakes hands after beating Germany's Carina Witthoeft during their women's first round match on day two of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on June 25, 2013. Date-Krumm won 6-0, 6-2. less

Japan's Kimiko Date-Krumm (L) shakes hands after beating Germany's Carina Witthoeft during their women's first round match on day two of the 2013 Wimbledon Championships tennis tournament at the All England ... more